US 12,424,954 B2
Dimmable light control system
Gwenael Maillet, Grenoble (FR); Jean-Louis Labyre, Sassenage (FR); and Gilles Bas, Beauvoisin (FR)
Assigned to STMicroelectronics (Grenoble 2) SAS, Grenoble (FR); and STMicroelectronics (Rousset) SAS, Rousset (FR)
Filed by STMicroelectronics (Grenoble 2) SAS, Grenoble (FR); and STMicroelectronics (Rousset) SAS, Rousset (FR)
Filed on Mar. 1, 2022, as Appl. No. 17/683,631.
Application 17/683,631 is a division of application No. 16/921,557, filed on Jul. 6, 2020, granted, now 11,296,626.
Application 16/921,557 is a continuation of application No. 16/281,604, filed on Feb. 21, 2019, granted, now 10,742,145, issued on Aug. 11, 2020.
Claims priority of application No. 1851734 (FR), filed on Feb. 27, 2018.
Prior Publication US 2022/0190758 A1, Jun. 16, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H02P 7/29 (2016.01); G05B 19/042 (2006.01); G06K 19/00 (2006.01); G06K 19/07 (2006.01); H02P 7/03 (2016.01); H02P 27/08 (2006.01); H04B 5/70 (2024.01)
CPC H02P 7/29 (2013.01) [G05B 19/042 (2013.01); G06K 19/00 (2013.01); G06K 19/0723 (2013.01); H02P 7/05 (2016.02); H02P 27/08 (2013.01); H04B 5/70 (2024.01); G05B 2219/25257 (2013.01); H02P 2209/09 (2013.01)] 43 Claims
OG exemplary drawing
 
1. A circuit for controlling a dimmable light in response to a near-field radio frequency communication in a radio frequency band, comprising:
a first circuit configured to receive at least one control set point through the near-field radio frequency communication; and
a second circuit configured to generate at least one electric signal having a pulse width modulation (PWM) in accordance with said at least one control set point for application to said dimmable light to set a light intensity output;
wherein the second circuit is further configured, during a time period within which the near-field radio frequency communication is occurring, to modify generation of said PWM control signal so that said PWM control signal does not contribute interfering noise in said radio frequency band; and
wherein the modification for the generation of said PWM control signal during said time period is to temporarily terminate output of the PWM control signal to said dimmable light.